My kids think it's cool when the Summer is warming up.

It will blow smoke rings every few seconds in the cold air.

 

Is this a bad sign?

 

Thanks,

Glenn

82 SubaruHummer (Summer) formerly 82 GL Hatch.

84 GL Mad Max

01 Forester

Exhaust valve, maybe. I had a Chevy with bad valves that did the same thing. These engines are very tough, so unless it becomes a problem with power or driveability, I don't think I'd worry about it too much.

Every car with dual exhaust I've owned blows 'smoke rings' in winter. It has more to do with exhaust flow through the system, and the timing of the exhaust pulses.

Nothing wrong with an exhaust puffing smoke rings. As said above, it's just timing of the exhaust pulses.

 

Years ago, a friend of mine had a built-to-the-hilt Chevy 283 not sure of HP, but it ran goooood, dual exhaust with glaspacks. Always puffed smoke rings with low air temps.